Water-To-Water Heat Exchanger - Siemens SINAMICS S120 Equipment Manual

9.7

Water-to-Water Heat Exchanger

9.7
If a cooling circuit that does not exceed 35 °C but does not fulfill the cooling water
requirements is already installed in the system, the two cooling circuits can be linked via a
water-to-water heat exchanger.
The coolers for the frequency converters are attached via a distributor in such a way as to
ensure the required flow without exceeding the required pressure. Conditions, such as height
differences and distances, must be taken into account here.
For devices without frost protection, we recommend you use VARIDOS TOP from Schilling
Chemie. VARIDOS TOP is an organic corrosion inhibitor that has been specially developed
for half-open and closed cooling systems. It prevents corrosion by creating an organic
protective film on the surface of the metal.
Figure 9-1
Equipment Manual Booksize Cold-Plate Power Sections
Manual, (GH4), Edition 06.2005, 6SL3097-2AJ00-0BP2
Water-to-water heat exchanger
Internal Liquid Cooling
9.7 Water-to-Water Heat Exchanger
9-5